Amorphous Fe_xNb_100-x with wide composition range

Authors

C.L. Chien, The John Hopkins University, Baltimore, Maryland
K.M. Unruh, The John Hopkins University, Baltimore, Maryland
Sy_Hwang Liou, University of Nebraska-LincolnFollow

Date of this Version

November 1982

Comments

Published by American Institute of Physics. J. Appl. Phys. 53, 7756 (1982). ©1982 American Institute of Physics. Permission to use. Journal home page = http://jap.aip.org/jap/.

Abstract

Sputtered amorphous Fe_xNb_100-x (30 ≤ x ≤ 85) has been studied by Mössbauer spectroscopy and resistivity measurements. The samples with x< 60 are nonmagnetic. The magnetic ordering temperatures of the samples with x ≥ 60 increase with Fe content. Small magnetic hyperfine fields are observed in the magnetic samples, consistent with the small Fe moments measured. The resistivity of the magnetic and nonmagnetic samples show different temperature dependences. Only the magnetic samples exhibit a resistivity minimum, indicating a Kondo-like mechanism.